Simon Giftcard as verification

Now this question has probably been exhausted to death, but I received my simon gift card (under my stealth name) and I'm prompted to put my CC info into eBay and/or Paypal. I hear that Simon GCs are no longer accepted and gets you flagged and I ALSO hear that they work like a charm. Can anyone shed some light please? I'm stuck on the "sign up for paypal" screen. I also have an Accountnow card coming in the mail, should I opt for that card? Would that card work? Thanks so much.